I have a High Standard DM-101 Derringer, 22 mag, from the 80's. It is in great condition but it will not fire. It was working great, but I broke it by dry firing (I did use spent cases as the manual advised). I took it to both gun shops in town and they were not able to help me--parts are not readily available.

I was able to find the manual online--which is very helpful... but I was wondering if anybody out there had successfully worked on these High Standard Derringers? I'm pretty sure I can get her taken apart OK, but not sure I can fix or reassemble!

Does anybody out there have any experience or direction to point me? Anybody ever do any work on this gun?